Grain-door



D. D. CAMPBELL.

GRAIN DOOR.

APPLICATION FILED JUNE 14. I920.

Patented Mar. 15, 1921.

JAEf/WQ m FEE a extremely simple form of grain cars.

'm'reo" surges PATENT" entice;

GRAIN-DOOR.

Specification of Letters Patent.

Patented Mar. 15, 1921.

a lication filed-June 14, 1920. Serial No. 388,910.

- vented certain new and useful Improvements in Grain-Doors, of whichthe following is a specification.

This invention relates to improvements in grain doors .for railwayfreight cars, and the objects of the invention are to provide an oorwhich will not get out of order and which will prevent leakage of thegrain in transit and to facilitate loading and unloading of the Furtherobjects are to provide. a grain door that may be placed in position insections and will remain in place without being fastened to the sides ofthe freight car by nails, screws, or fastenings of any kmd, and

that may be removed at destinatlon without damagin the door or the carin any way.

a With t e above and other objects in view,

the invention consists essentially of the construction described indetail in the accompanying specification and drawings.

In the drawings:

Figure 1 is a perspective view of anembodiment of the outside of thegrain door.

Fig. 2 is a sectional perspective view of the same.

Fig. 3 is a horizontal section of the door.

Fig. 4 is a perspective view of one of the sections of the same.

Like characters of reference refer to like parts on all the drawings.Referring to the drawings, C and D represent the two lower sections ofthe door and E and F the two upper sections of the door, the two lowersections being formed considerably wider than the upper sections, andall of the sections being rabbet jointed to each other but not beingfastened rigidly to ether.

hese sections may be constructed in any convenient manner, the sectionsshown being formed of two thicknesses of boards, of such width andfastened together in such a manner that each section overlaps thesection immediately underneath for the space of two ini'ies.

Each section is reinforced by a plurality of say three reinforcingsupports or strlps 10 at right angles to the bottom of the section insuch a manner that the strips of each' section will be immediately abovethe strips of the section below, whereby the reinforcng stri s willextend vertically from the to to t e bottom of the car.

he edges of each strip are beveled in such a manner as to leave exposedthe'bOttom of --the strips reinforcing the sections immediately above soas to permit pressure being brought to bear on the bottom of such stripsfor-the purpose of removing the sec-- tions of the door.

The sections E and F are relatively wider than the sections 0 and D andthese sections are rovided with suitable retainin plates G. heseretaining plates are suita ly supported. from the side of the door andadapted to Sroject over the ends of the sections.

ne retaining plate G is provided on each side of the door and is formedin two sec-- tions, a lower portion, 11 and an upper portion, 12. Theedges of the portion 12 are spaced back a distance from the edges of theportion 11, whereby the distance between the inner edges of the portion12 will be greater than that between the inner edges of the portion 11of the plate G on opposite sides of the door. In this way, the sectionsC and D may be raised and lifted outwardly between the portions 12without engaging the said portions.

In this way it is possible to provide wider lower sections C and D sincethe limit to the width is the distance between the top of the portions11 and 12 and the roof of the car.

In filling the car the sections are placed in position as indicated, thepressure of the grain holding the sections firmly in position againstthe side of the door opening. Should it be desired to inspect the car,the top of the section F may be removed and a sam 1c of the grain taken.When it is desire to empty the car, the sections may be successivelydisengaged by the use of a suitable le'ver or bar H which may beinsertedto press on the reinforcing strips 10 which, when priedupwardly, will carry the sections with them.

As-many changes could be made in the above construction and many widelydifferent embodiments of my invention w thin the scope of the claim,constructed without de- What I claim as my invention is:

A grain door comprising upper and lower sections, the lower sectionsbeing wider than the 11 per sections, each section being forme with aplurality of reinforcing strips correspondingly spaced on all thesectlons and having the edges beveled at one end to permit theapplication of pressure to the end of the strip on the adjacent section,and a retainin means on the side of the car door inclu ng platesengaging the outer edges of the sections omopposite newness sidesthereof, the inner edges of'the plates engaging the upper sections beinga. greater distance apartt permit the lower sections to be with rawnbetween the plates designed to engage the 'upper sections.

In witness whereof I hate hereunto set my 20 hand in the presence of awitness. t DONALD D. CAMPBELL. Witness:

RUSSEL S. Sum.

an those engaging the lower 15 sections, and suificiently far a art to

